condition mean min max 4 h after light 55.79545 42.3863 69.2046 8 h after light 58.954 56.889 61.019 12 h after light 53.48285 44.938 62.0277 4 h after dark 44.26865 41.1592 47.3781 8 h after dark 34.3379 34.1172 34.5586 12 h after dark 38.4174 36.6101 40.2247